Question

(3a2)(-7a4)

Answer 1

well, the easiest part is multiplying (3)(-7) = -21

the next part is multiplying (a^2)(a^4). when we have the same base (a) we keep the base and add the exponents

(a^2)(a^4) = a^(4+2) = ?

Answer 2

So the answer would be
=-21a^6?

Answer 3

yes

Answer 4

Question so when there is only 1 exponent next to the base and the other base does not have one, do we make the base that does not a 1 exponent so we can add or No?

Answer 5

yes

Answer 6

as an example...

(a)(a^3) = (a^1)(a^3) = a^4

Answer 7

when there is no exponent, you can always make the exponent 1

Answer 8

Awesome you are great thanks for the help.. It has been years 15plus since I done this and now I back to school finishing my engeneering degree and have to do this all over. Thanks and great site. Will once again